Add #[track_caller] to with_gil. (PyO3#5109)

* Add #[track_caller] to with_gil.

* Add newsfragment.

Author: m-ou-se

newsfragments/5109.changed.md

@@ -0,0 +1 @@
+Add `#[track_caller]` to `with_gil` and `with_gil_unchecked`.

src/marker.rs

@@ -399,6 +399,7 @@ impl Python<'_> {
     ///
     /// [`auto-initialize`]: https://pyo3.rs/main/features.html#auto-initialize
     #[inline]
+    #[track_caller]
     pub fn with_gil<F, R>(f: F) -> R
     where
         F: for<'py> FnOnce(Python<'py>) -> R,
@@ -433,6 +434,7 @@ impl Python<'_> {
     ///
     /// Behavior in other scenarios is not documented.
     #[inline]
+    #[track_caller]
     pub unsafe fn with_gil_unchecked<F, R>(f: F) -> R
     where
         F: for<'py> FnOnce(Python<'py>) -> R,